399989758

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{772181}}^1$

素因数の和:772227

約数の個数: 16

約数和(自身を含む): 704229984

約数和(自身を除く): 304240226

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 772181, 1544362, 5405267, 10810534, 28570697, 57141394, 199994879, 399989758]

約数ペア:

[(1, 399989758), (2, 199994879), (7, 57141394), (14, 28570697), (37, 10810534), (74, 5405267), (259, 1544362), (518, 772181)]